[PATCH 2/7] [gdb/testsuite] Handle Horizontal Position Absolute in tuiterm

[Tom de Vries <tdevries@suse.de>]

I ran the tui testsuite on freebsd with TERM=ansiw, and investigated the first
failure, in test-case gdb.tui/tui-init-source.exp.

The problem turned out to be the lack of handling a Horizontal Position
Absolute [1] sequence "^[[80`" in tuiterm.

Add Term::_csi_`, forwarding to Term::_csi_G which handles Cursor Horizontal
Absolute [2].

Tested on x86_64-linux.

[1] https://vt100.net/docs/vt510-rm/HPA.html
[2] https://vt100.net/docs/vt510-rm/CHA.html
---
 gdb/testsuite/gdb.tui/tuiterm.exp |  8 ++++++++
 gdb/testsuite/lib/tuiterm.exp     | 10 +++++++++-
 2 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/gdb/testsuite/gdb.tui/tuiterm.exp b/gdb/testsuite/gdb.tui/tuiterm.exp
index fff7c37a56e..0e03bfaa8ea 100644
--- a/gdb/testsuite/gdb.tui/tuiterm.exp
+++ b/gdb/testsuite/gdb.tui/tuiterm.exp
@@ -451,6 +451,14 @@ proc test_horizontal_absolute { } {
 	"qrstuvwx"
 	"yz01234 "
     } 7 2
+
+    Term::_csi_`
+    check "horizontal position absolute 1" {
+	"abcdefgh"
+	"ijklmnop"
+	"qrstuvwx"
+	"yz01234 "
+    } 0 2
 }
 
 proc test_cursor_position { } {
diff --git a/gdb/testsuite/lib/tuiterm.exp b/gdb/testsuite/lib/tuiterm.exp
index 71ef6a4eacd..2268b1e28e0 100644
--- a/gdb/testsuite/lib/tuiterm.exp
+++ b/gdb/testsuite/lib/tuiterm.exp
@@ -155,6 +155,14 @@ namespace eval Term {
 	}
     }
 
+    # Horizontal Position Absolute.
+    #
+    # https://vt100.net/docs/vt510-rm/HPA.html
+    proc _csi_` {args} {
+	# Same as Cursor Horizontal Absolute.
+	return [Term::_csi_G {*}$args]
+    }
+
     # Cursor Up.
     #
     # https://vt100.net/docs/vt510-rm/CUU.html
@@ -740,7 +748,7 @@ namespace eval Term {
 		_log "wait_for: unsupported escape"
 		error "unsupported escape"
 	    }
-	    -re "^\x1b\\\[(\[0-9;\]*)(\[a-zA-Z@\])" {
+	    -re "^\x1b\\\[(\[0-9;\]*)(\[a-zA-Z@`\])" {
 		set cmd $expect_out(2,string)
 		set params [split $expect_out(1,string) ";"]
 		_log "wait_for: _csi_$cmd <<<$expect_out(1,string)>>>"
-- 
2.43.0